fix(deps): update dependency google-auth-library to v5 (#514)

Renovate Bot · JustinBeckwith · commit b3ef8f13bd63 · 2019-07-26T08:15:17.000-07:00
diff --git a/package.json b/package.json
@@ -56,7 +56,7 @@
     "dot-prop": "^5.0.0",
     "escape-string-regexp": "^2.0.0",
     "extend": "^3.0.0",
-    "google-auth-library": "^4.0.0",
+    "google-auth-library": "^5.0.0",
     "google-gax": "^1.0.0",
     "is": "^3.0.1",
     "is-utf8": "^0.2.1",
